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 <h1>从 PHP 5.5.x 移植到 PHP 5.6.x</h1>
<h2>目录</h2><ul class="chunklist chunklist_appendix"><li><a href="migration56.incompatible.html">向后不兼容</a></li><li><a href="migration56.new-features.html">新特性</a></li><li><a href="migration56.deprecated.html">PHP 5.6.x 中已废止的特性</a></li><li><a href="migration56.changed-functions.html">函数的变化</a></li><li><a href="migration56.new-functions.html">新加函数</a></li><li><a href="migration56.openssl.html">OpenSSL changes in PHP 5.6.x</a></li><li><a href="migration56.extensions.html">扩展中的变动</a></li><li><a href="migration56.constants.html">新加的全局常量</a></li></ul>


 








 









 








 










 








 






 








 









 <div id="migration56.intro" class="sect1">
  <p class="para">
   PHP 5.6 中大多数的改善对旧项目没有影响。有一些
   <a href="migration56.incompatible.html" class="link">不兼容处</a>
   和 <a href="migration56.new-features.html" class="link">新功能</a> 需要
   注意下，并且在正式布署升级后的项目前应该测试您的代码。
  </p>

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